Hyposecretion of adrenal cortex hormones can lead to ___.

Correct Answer: A

Rationale: Addison disease results from insufficient adrenal cortex hormones like cortisol and aldosterone.

Correct Answer: A

Rationale: Peptide hormones bind to receptors on the plasma membrane due to their water solubility.

Correct Answer: D

Rationale: Growth hormone stimulates cell division, protein synthesis, and bone growth.

Correct Answer: C

Rationale: Calcitonin, from thyroid C-cells, regulates calcium levels.

Correct Answer: A

Rationale: Aldosterone maintains electrolyte balance by retaining sodium and excreting potassium.